3003 Aluminum Sheet for New Energy Power Battery Casing – Lightweight, Corrosion-Resistant & High-Formability Solution | Mingtai Aluminum
Introduction: The Material Driving the New Energy Vehicle Revolution
The global shift toward new energy vehicles (NEVs) has placed unprecedented demands on battery technology. As the core energy source of electric vehicles, the battery pack must be lightweight, durable, safe, and thermally efficient. The casing that protects this critical component plays an equally vital role – and 3003 aluminum sheet has emerged as the material of choice for new energy power battery casings across the industry.
3003 aluminum alloy belongs to the Al-Mn (aluminum-manganese) series, with manganese content precisely controlled between 1.0% and 1.5%. This composition delivers an optimal balance of mechanical strength, corrosion resistance, formability, and lightweight performance – making it the preferred material for battery trays, covers, side panels, and module housings in electric vehicles.
Mingtai Aluminum (Stock Code: 601677), with over 27 years of experience and an annual production capacity exceeding 1.45 million tonnes, supplies premium 3003 aluminum sheet specifically engineered for new energy power battery casing applications. Our products meet GB/T, ASTM, EN, and JIS standards, and are trusted by leading NEV manufacturers worldwide.
Why 3003 Aluminum is the Ideal Choice for Power Battery Casings
1. Superior Lightweight Performance
3003 aluminum has a density of approximately 2.70 g/cm³ – only one-third that of traditional steel. This remarkable weight reduction translates directly into increased vehicle range. Industry data shows that for every 100 kg of weight reduction, an EV‘s range can improve by 10–15%.
By using 3003 aluminum sheet for battery casings, manufacturers can significantly reduce the weight of each battery cell housing, thereby reducing the overall battery module weight and extending vehicle range.
2. Excellent Formability for Complex Geometries
3003 aluminum sheet offers outstanding plasticity and ductility, making it ideal for deep-drawing and complex forming processes. In the O temper (fully annealed), it delivers elongation up to 28%, allowing battery casings to be formed through single-step deep drawing without cracking. This eliminates the need for welded bottom structures, simplifying production and improving seal integrity.
Available tempers include O, H12, H14, H16, H18, H19, H22, H24, H26, H28, and H112, with H14 (half-hard) being the most widely used for battery housing applications.
| Temper |
Tensile Strength (MPa) | Yield Strength (MPa) | Elongation |
|---|---|---|---|
| O | ~110 | ~40 | ~28% |
| H14 | ~160 | ~130 | ~8.3% |
3. Exceptional Corrosion Resistance
As an Al-Mn alloy, 3003 aluminum exhibits excellent anti-corrosion and anti-rust properties. The natural oxide layer formed on the surface provides reliable protection against moisture, salt spray, and electrolyte corrosion. In accelerated salt spray tests, 3003 aluminum maintains structural integrity significantly longer than industry standards, even in environments with up to 95% humidity.
This corrosion resistance ensures the battery casing remains intact and leak-free over the vehicle‘s lifetime, preventing internal short circuits and electrolyte leakage.
4. Superior Thermal and Electrical Conductivity
3003 aluminum offers excellent thermal conductivity, enabling rapid heat dissipation from the battery during operation. This helps maintain stable internal temperatures, preventing thermal runaway and extending battery life. Its good electrical conductivity also reduces internal resistance, improving charge-discharge efficiency.
5. Reliable Welding and Assembly Performance
3003 aluminum sheet is compatible with mainstream welding processes including argon arc welding and resistance welding. Welded joints are strong, durable, and resistant to cracking, facilitating efficient assembly and reducing production costs.
6. Impact Resistance and Safety
Battery casings made from 3003 aluminum offer excellent impact resistance, absorbing energy without cracking or leaking. This ensures the battery remains protected even under extreme operating conditions.
Applications in New Energy Power Batteries
3003 aluminum sheet is widely used across the full spectrum of new energy battery applications:
●Battery trays and lower boxes – Structural support for the entire battery pack
●Battery covers and top plates – Protective sealing for battery modules
●Battery side panels – Corrosion-resistant, durable protective panels
●Battery module housings – Individual cell enclosures
●Battery compartment dividers – Internal structural separation
●Liquid cooling plates – Thermal management system components
●Battery tray components – Structural integration and protection
●Energy storage system enclosures – Stationary battery protection
●Charging infrastructure housings – Outdoor charging station enclosures
Technical Specifications
| Alloy | 3003 |
| Temper | O, H12, H14, H16, H18, H19, H22, H24, H26, H28, H112 |
| Thickness | 0.2 – 500 mm (0.8 – 3.0 mm typical for battery casings) |
| Width | 20 – 2,650 mm |
| Length | 500 – 16,000 mm (customizable) |
| Tensile Strength (O temper) | ~110 MPa |
| Tensile Strength (H14) | ~160 MPa |
| Density | ~2.70 g/cm³ |
| Standards | ASTM B209, EN 485, GB/T 3880, JIS H4000 |
| Certifications | IATF 16949, ISO 9001, ISO 14001 |
Why Choose Mingtai Aluminum?
●Over 27 years of aluminum experience – Publicly traded company (Stock Code: 601677) with dedicated new energy materials production lines
●Full temper range – O, H14, H18, H112, and more for diverse applications
●Proven battery casing performance – Excellent formability, corrosion resistance, and lightweight strength
●Precision manufacturing – Thickness tolerance within ±0.02 mm
●Custom solutions – Thickness, width, and temper tailored to your specific requirements
●Global compliance – ASTM B209, EN 485, GB/T 3880, JIS H4000
●IATF 16949, ISO 9001, ISO 14001 certified – Automotive-grade quality management
●Flexible ordering – MOQ 3 tonnes; free sample testing available
●Fast delivery – 7–45 days to over 150 countries
Conclusion
For new energy vehicle battery manufacturers seeking a reliable, high-performance casing material that combines lightweight strength, exceptional formability, corrosion resistance, and thermal efficiency, 3003 aluminum sheet from Mingtai Aluminum delivers the comprehensive performance that modern EV battery systems demand. With over 27 years of aluminum expertise and full international certification, Mingtai is your trusted partner for new energy power battery casing solutions.
Contact Mingtai Aluminum today for free samples, technical data sheets, or a factory-direct quotation.
FAQ – 3003 Aluminum Sheet for New Energy Power Battery Casing
Q1: What thickness of 3003 aluminum sheet is typically used for power battery casings?
A: Typical thickness ranges from 0.8 mm to 3.0 mm, depending on the specific battery design and structural requirements.
Q2: What is the difference between O temper and H14 temper for battery casing applications?
A: O temper (fully annealed) offers maximum formability (elongation ~28%) and is ideal for deep-drawing complex shapes. H14 temper (half-hard) provides higher strength (tensile ~160 MPa) and is the most widely used for standard battery housing applications.
Q3: Why is 3003 aluminum preferred over steel for battery casings?
A: 3003 aluminum is approximately one-third the weight of steel, significantly improving vehicle range. It also offers superior corrosion resistance, excellent formability, and better thermal conductivity for heat dissipation.
Q4: Does 3003 aluminum provide adequate strength for battery protection?
A: Yes. 3003 aluminum offers excellent impact resistance, absorbing energy without cracking or leaking. It fully meets the strength and rigidity requirements for power battery casings under normal and extreme operating conditions.
Q5: Can 3003 aluminum sheet be welded for battery casing assembly?
A: Yes. 3003 aluminum offers excellent weldability, compatible with argon arc welding and resistance welding processes. Welded joints are strong, durable, and resistant to cracking.
Q6: What certifications does Mingtai hold for new energy materials?
A: Mingtai is IATF 16949 (automotive-grade quality management), ISO 9001, and ISO 14001 certified. Our products meet ASTM B209, EN 485, GB/T 3880, and JIS H4000 standards.
Q7: What is the minimum order quantity?
A: MOQ is 3 tonnes. Sample quantities are available for validation.
Q8: How is the sheet packaged for shipment?
A: Coils are packaged with moisture-proof wrapping, edge protectors, and optional interleaving to protect the surface during transit.
Mingtai Aluminum – New Energy Materials Division
Phone: +86-17760728273
Email: sales@mingtai-al.com
Website: www.mingtaialuminum.com
Factory Address: Gongyi City Industrial Agglomeration Area, Henan, China
